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3M™ Ground Master®

Ground Monitors

Ensure a proper grounding of your equipment at all times

Proper grounding is crucial for safe and uninterrupted operation of equipment. In critical environ-
ments broken ground connection may result in personnel exposure to dangerous voltage, equip-
ment lockup or malfunction and damage to sensitive components. Proper grounding is absolutely
necessary for a safe handling with sensitive components and devices.
The 3M™ Ground Master offers continuous monitoring of proper ground connection of up to
8 tools and up to 16 tools in tandem with another Ground Master. With individual status indica-
tion, 3M™ Ground Master shows which ground connection is being monitored, which one is OK Applications
(green LED) and which one has failed (red LED). Enabling switches for each ground connection • Pick-and-place machines, machines
allow for accurate and safe indication. In order to protect the equipment in case of faulty wiring • PCB handling equipment
of neutral leads, power and ground, every ground connection is protected by its individual easily • Screen printer
replaceable fuse. • Conveyor belts
• Tester
In addition to ground connection, 3M™ Ground Master offers monitoring of EMI on each • Photolithography equipment
ground. Measuring the EMI voltage helps to voltage which presents a danger for persons, • Wafer handlers
machines or devices. • GMR head testers
The 3M™ Ground Master provides information to a facility monitoring system (FMS) with • Any sensitive equipment locality
detailed status on each ground connection. 3M™ Ground Master RT provides relay closure and • Industrial robotics
logic signal to the tool so that monitored machines or devices can be shut down in case of failed • Tool cluster
grounding. • Medical environment
• Military
• Wherever ESD and EMI are an issue

Key advantages
• ANSI/ESDA S.20.20 compliant
Ground Master measures ground impedance in accordance with requirements of
ANSI/ESDA S.20.20 standard Features
• Adjustable alarm threshold • Continuous ground monitoring
The alarm threshold can be easily adjusted at any time in a range of 1 to 20 ohm • ANSI-ESDA S.20.20 compliant
• Safety • Adjustable alarm threshold
• EMI monitoring on each ground
Each ground connection is protected by individual fuses to protect equipment in case of • Safety protection for each ground
faulty wiring of neutral leads, power and ground. • Enabling switches for each ground
• EMI • Industrial network interface
Ground Master monitors EMI on each ground connection and indicates EMI status • Connection to a facility monitoring
• Output to data acquisition or facility monitoring system system
Ground Master monitors provide intelligent output to a data acquisition or facility • With model RT relay and logic control
monitoring system. Power can be supplied via the same cable from FMS as well output
• Output to the tool
Ground Master RT provides relay closure and 5V logic signal to the tool to shut e.g.
a machine down when any of the grounds fail

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